JP2002002444A - Seat belt device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt device with a buckle device having an excellent bendablity along a longitudinal direction of a vehicle by only fixing an elastic supporting body for supporting a buckle body in an anchor point, enhanced in fitness for an occupant without complicating a mechanism, and reliable in strength. SOLUTION: This device is provided wilt the buckle body 10 for locking disengageably a tongue plate 5, and the elastic supporting body 11 (31) of which the one end is fixed to the buckle body 10 and of which the other end is fixed to an anchor 9 (32, 35) provided in an inner side of the vehicle so as to support the buckle body 10. The elastic supporting body 11 (31) is branched plurally in the side fixed to the anchor 9 (32, 35), and one portion of each branched part 11A, 11B (31A, 31B) is arranged to be overlapped in a vertical direction of the buckle body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt device having a buckle device provided on a floor or a seat on the inner side of a vehicle.

[0002]

2. Description of the Related Art Conventionally, a seat belt device is attached to a seat of a vehicle such as an automobile in order to secure occupants. This seatbelt device is provided with a buckle device for detachably locking webbing mounted on a seat.

[0003] This buckle device generally comprises a tongue plate through which the webbing is inserted, a buckle body into which the tongue plate is inserted and withdrawn, and a buckle main body for removably locking the inserted tongue plate, and a buckle body. And a support that is fixedly supported by the vehicle.
Usually, the buckle main body is provided on a floor or a seat of the vehicle via an anchor so that the buckle main body is disposed on the inner side of the vehicle.

In recent years, a buckle device has been proposed in which the support is made of a member having a certain degree of elasticity (for example, a wire or a cable) in consideration of the fit to an occupant. This type of buckle device supports, for example, a buckle body using one elastic support, or forms a loop by bending an intermediate portion of an elastic support (such as a wire) so as to be curved. After fixing the loop portion to the buckle base of the buckle main body, inserting both ends of the wire into holes formed in the anchor, and then fixing the portion by caulking, various forms have been proposed. I have. The latter type is described, for example, in US Pat. No. 4,150,843.

[0005]

However, the above-mentioned 1
In the buckle device of the type in which the buckle body is supported by the elastic support, it is necessary to increase the diameter of the elastic support due to the strength, and as a result, the rigidity of the elastic support increases, and the occupant fits. There is a possibility that the properties (such as flexibility) cannot be sufficiently obtained.

Further, as in the buckle device described in US Pat. No. 4,150,843, a buckle device of a type in which the buckle body is supported by two elastic supports as a result is provided with two elastic support members. Since the body is provided in a state of being overlapped (arranged side by side) in the front-rear direction of the vehicle, there is no problem in bendability with respect to the occupant side (substantially the width direction of the vehicle), but in the front-rear direction of the vehicle, The overlappingly provided supports interfere with each other, making it difficult to bend in the front-rear direction of the vehicle, and there is a possibility that the occupant may not be sufficiently fitted (e.g., supple).

[0007] In order to cope with the movement of the vehicle in the front-rear direction, for example, it is necessary to take measures to rotate the entire elastic support around the anchor point, thereby obtaining a fit to the occupant. The response is.

The present invention does not provide a function for rotating the entire elastic support around the anchor point, even if the buckle device has a structure in which the side of the elastic support fixed to the anchor is branched into a plurality. By simply fixing the elastic support at the anchor point, good bendability can be obtained in the front-rear and left-right directions of the vehicle, without complicating the mechanism, improving the fit to the occupant, and improving strength. It is an object of the present invention to provide a seat belt device provided with a highly reliable buckle device.

[0009]

In order to achieve this object, the present invention provides a buckle body for releasably locking a tongue plate, one of which is fixed to the buckle body,
The other is fixed to the anchor provided on the inner side of the vehicle, the elastic support body to support the buckle body, a seat belt device having a buckle device,
The elastic support body provides a seat belt device in which a side fixed to the anchor is branched into a plurality of parts, and a part of each branch part is arranged so as to overlap in a vertical direction of the buckle body. is there.

[0010] Here, the vertical direction of the buckle body generally means the direction in which the upper cover and the lower cover are provided.
That is, when the tongue plate is inserted, the direction is arranged substantially perpendicular to the plane of the tongue plate.

When the buckle device of the seat belt device having this configuration is installed in a vehicle, the vertical direction of the buckle body is oriented in the width direction of the vehicle (occupant side). At this time, in the buckle device, since a part of each branch portion of the elastic support member is arranged to overlap in the vertical direction of the buckle body, the buckle device is branched when the elastic support member is tilted in the front-rear direction of the vehicle. The elastic supports do not interfere with each other. Further, since the branch portions of the elastic support can be separated from each other in the width direction of the vehicle, the branched elastic supports do not interfere with each other when the elastic support is tilted in the width direction of the vehicle. Therefore, without providing a function to rotate the entire elastic support around the anchor point, just by fixing the anchor to the floor or seat on the inner side of the vehicle at the anchor point, Good bendability can be obtained.

Note that "not to interfere" means not only that there is no contact between the elastic supports but also that the movement of the elastic supports is not hindered even if they are in contact. It means that there is no.

Further, since the buckle body is substantially supported by a plurality of elastic supports, sufficient strength can be obtained and a buckle device having excellent durability can be provided.

[0014] The elastic support may be arranged such that the branch portions cross each other. With such a configuration, the elastic support can be moved in all directions (360-degree direction).

The elastic support may be covered with a resin. Also, it can be inserted into a resin tube.
By doing so, even when the elastic supports come into contact with each other and cause friction when the elastic supports move (fall),
These can be prevented from rubbing. Further, the elastic support can be fixed to the anchor at a plurality of locations.

The anchor can be made of a pipe material. Further, the anchor member may be made of a pressed product.

Still further, the anchor may be configured such that a portion for fixing the elastic support has a step in accordance with the overlapping state of the branch portions of the elastic support. By doing so, the connection (connection) between the elastic support and the anchor can be performed smoothly. Also, the feeling of strangeness in the appearance of the finished product (product) is reduced.

The elastic support has only to have appropriate strength, elasticity and the like suitable for the purpose of supporting the buckle body, and can be made of, for example, a wire. Examples of the material of this wire include a stainless steel material and a hard steel wire. The configuration of the wire is, for example, 7
A × 7 configuration or a 7 × 19 configuration can be suitably used.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a schematic diagram showing a use state of a seat belt device according to Embodiment 1, and FIG. 2 is a plan view showing a buckle device portion of the seat belt device according to Embodiment 1. FIG. 3 is a side view of the buckle device shown in FIG.

The seat belt device according to the first embodiment is
As shown in FIGS. 1 to 3, a buckle main body 10 that locks the tongue plate 5 in a detachable manner, one is fixed to the buckle main body 10, and the other is fixed to an anchor 9 provided on the inner side of the vehicle. And a resilient support 11 for supporting the buckle body 10.

In this seat belt device, specifically, a webbing 1 for supporting an occupant includes, for example, a center pillar 2.
And is retracted and stored in a retractor 3 provided below. The webbing 1 pulled out from the retractor 3 is folded back by a through anchor fitting 4 provided above the vehicle and guided downward to become a shoulder webbing portion 1A, and further passes through a tongue plate 5 and a waist webbing portion 1B.
Becomes This tongue plate 5 is attached to an anchor 9
It is fitted into a buckle body 10 provided at the distal end of an elastic support 11 attached via (see FIGS. 2 and 3). The other end of the webbing 1 is fixed to a vehicle support or the like via an anchor plate 6. Further, the elastic support 11 is protected by the boot 7. Reference numeral 8 is a seat on which an occupant sits.

The buckle body 10 includes a buckle base 12 that functions as a frame, a slider 13 that moves in accordance with insertion and removal of the tongue plate 5, a latch plate 14 that locks the tongue plate 5, and a coil that moves the slider 13. A spring 15A, a coil spring 15B for swinging the latch plate 14, a lock pin 16 for controlling the swing of the latch plate 14, and a holder member 17 for supporting the coil spring 15B and movably supporting the lock pin 16. A release button 18 for unlocking the tongue plate 5, a coil spring 15C for urging the release button 18 in the direction of removal of the tongue plate 5, an upper cover 19A for accommodating these, and a lower cover 19B.
And is provided.

On the base end side of the buckle base 12 (the side opposite to the side where the tongue plate 5 is inserted), the elastic support 1
1 is formed with a pin hole 21 into which a pin 20 for fixing 1 is inserted.

For example, the elastic support 11 is formed by bending a substantially central portion of a wire so as to be bent into a loop shape.
The side fixed to the anchor 9 is configured to be branched into two. The curved portion of the elastic support 11 is fixed to the buckle base 12 by a pin 20. Also, the branch portions 11A and 11B of the elastic support 11
Of the anchor 9 are overlapped in the vertical direction of the buckle body 10, that is, in the direction in which the upper cover 19A and the lower cover 19B are provided.
It is crimped at 3 and fixed.

In the first embodiment, the elastic support 11
A 7 × 7 wire made of stainless steel was used.

In the buckle device having this configuration, the vertical direction of the buckle body 10 is set so as to be in the width direction of the vehicle.
It is fixed to the inner side of the vehicle via an anchor 9. The anchor 9 is fixed to a floor or a seat on the inner side of the vehicle by bolts or screws (not shown) inserted into the anchor point 22.

In this buckle device, the ends of the branch portions 11A and 11B of the elastic support 11 are vertically overlapped with the buckle body 10, so that
When the elastic support 11 moves in the front-rear direction of the vehicle, the branch portions 11A and 11B do not interfere with each other. Further, the ends of the branch portions 11A and 11B can be separated from each other in the width direction of the vehicle.
1 is moved in the width direction of the vehicle,
1B does not interfere with each other. For this reason, the elastic support 11 can be smoothly moved to the front, rear, left and right of the vehicle. Therefore, good bending properties can be obtained in the front-rear and left-right directions of the vehicle without providing a function of rotating the entire elastic support body 11 around the anchor point 22.

Also, the buckle body 10 is substantially supported by the two elastic supports 11,
It can be fixed to the vehicle with sufficient strength.

In the first embodiment, the elastic support 11
As described above, the case of using a 7 × 7 wire made of stainless steel is described, but the present invention is not limited to this.
It may have a 7 × 19 configuration or the like, and as a material, a hard steel wire or the like can be suitably used. In addition, the elastic support 11
The member is not particularly limited as long as the member has characteristics (for example, strength and elasticity) suitable for the purpose of supporting the buckle body 10. (Embodiment 2) Next, Embodiment 2 according to the present invention will be described with reference to the drawings.

FIG. 4 is a plan view showing a buckle device portion of the seat belt device according to the second embodiment, and FIG. 5 is a side view of the buckle device shown in FIG. is there.

In the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The buckle device according to the second embodiment differs from the buckle device according to the first embodiment in that an elastic support for supporting the buckle body and an anchor to which the elastic support is crimped (fixed). The structure is as follows.

As shown in FIG. 4 and FIG.
For example, the elastic support body 31 according to (1) is formed by bending a substantially central portion of a wire so as to be bent into a loop shape, and branching the side fixed to the anchor 32 into two parts,
And 31B are configured to cross each other at a substantially central portion in the length direction. That is, the elastic member 31 is arranged so as to be overlapped in the vertical direction of the buckle body 10 by intersecting the branch portions 31A and 31B. As in the first embodiment, the elastic support 31 has the curved portion fixed to the buckle base 12 by the pin 20. Further, the branch portions 31A and 31A
B are connected to the caulking portions 33A and 33A of the anchor 32.
In FIG. 3B, it is caulked and fixed at two places. The same elastic support 31 as that of the first embodiment can be used.

The anchor 32 is bent so that a substantially central portion of a hollow pipe material is curved and formed into a loop shape, and is substantially U-shaped.
It has a shape configured in the shape of a letter. Both ends of the anchor 32 are insertion portions 32A and 32B into which the ends of the branch portions 31A and 31B of the elastic support 31 are inserted. In addition, as shown in FIG. 5, both ends of the anchor 32 are shifted (by providing a step) so as to match the arrangement of the branch portions 31A and 31B of the elastic support body 31 in the vertical direction. Is formed. In addition, anchor 3
The loop portion 2 functions as an anchor point 34 into which a bolt, a screw, or the like as a fixing member for fixing the anchor 32 to a floor portion, a seat, or the like of the vehicle is inserted.

The buckle device having this configuration is arranged such that the vertical direction of the buckle body 10 is the width direction of the vehicle.
The vehicle is fixed to an inner side of the vehicle via an anchor 32. Here, in this buckle device, since the branch portions 31A and 31B of the elastic support 31 are configured to intersect at a substantially central portion in the length direction thereof, the elastic support 31 is moved in all directions (360 degrees) of the vehicle. Direction) when moving
1A and 31B do not interfere with each other. Therefore, the elastic support 31 can be smoothly moved in all directions (360-degree direction) of the vehicle. Therefore, good bendability in all directions of the vehicle can be obtained without providing a function of rotating the entire elastic support 31 around the anchor point 34.

Further, since a step is formed at both ends of the anchor 32 in accordance with the vertical arrangement of the branch portions 31A and 31B of the elastic support 31, the connection between the branch portions 31A and 31B and the anchor 32 is established. This makes it easier to make the appearance easier.

Further, since each of the branch portions 31A and 31B is fixed to the anchor 32 at two places, for example, a load applied to the elastic support body 31 at the time of a vehicle collision can be dispersed at two places, Surface reliability can be further improved. Third Embodiment Next, a third embodiment according to the present invention will be described with reference to the drawings.

FIG. 6 is a plan view showing a buckle device portion of the seat belt device according to the third embodiment, FIG. 7 (1) is a side view of the anchor portion, and FIG. 7 (2) is an end view of the anchor portion. 7 (3) is a plan view of the anchor portion.

In the third embodiment, the same members as those in the second embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The buckle device according to the third embodiment differs from the buckle device according to the second embodiment in the structure of the anchor in which the elastic support for supporting the buckle body is crimped (fixed).

As shown in FIGS. 6 and 7, the third embodiment
Is formed by press-forming and mechanically processing a part of the anchor 35, and the ends of the branch portions 31A and 31B of the elastic support 31 are inserted into both ends of the anchor 35, respectively. It is formed in a hollow cylindrical shape, and the tip ends thereof are insertion portions 35A and 35B for inserting the branch portions 31A and 31B. In addition, as shown in FIG. 7, both ends of the anchor 35 are shifted (by a step) so as to match the arrangement of the branch portions 31A and 31B of the elastic support body 31 in the vertical direction. Is formed. Further, the insertion portions 35A and 35A of the anchor 35
At the end opposite to 5B, there is formed a hole into which a bolt or a screw, which is a fixing member for fixing the anchor 35 to a vehicle floor, a seat, or the like, is inserted. Function.

The branch portions 31A and 31B of the elastic support member 31 supporting the buckle body 10 are inserted into the insertion portions 35A and 35B of the anchor 35, respectively, and are caulked at two places at the caulking portions 37A and 37B of the anchor 35, respectively. Tightened and fixed.

The buckle device having this configuration is also fixed to the inner side of the vehicle via the anchor 35 so that the vertical direction of the buckle body 10 is in the width direction of the vehicle, similarly to the above-described embodiment. Thus, the elastic support 31 can be smoothly moved in all directions (360-degree direction) of the vehicle. Therefore, good bending properties can be obtained in all directions of the vehicle without providing a function of rotating the entire elastic support 31 around the anchor point 36. Further, since the steps are formed at both ends of the anchor 35, the branch portions 31A and 31B and the anchor 35
Connection can be easily established, and a sense of incongruity in appearance can be reduced. Further, since each of the branch portions 31A and 31B is fixed to the anchor 35 at two places, for example, the load applied to the elastic support body 31 at the time of a vehicle collision can be dispersed at two places. Properties can be further improved.

In the third embodiment, the case where the step is formed by shifting the one insertion portion 35B side of the anchor 35 in the above-described vertical direction has been described. However, the present invention is not limited to this, and as shown in FIG. By shifting both the insertion portions 35A and 35B of the anchor 35 in the above-described vertical direction,
A step may be formed. Further, as shown in FIG. 9, a step need not be provided.

As shown in FIG. 10, the branch portions 31A and 31B of the elastic support member 31 are made of a resin tube 39.
A and 39B. By doing so, when the elastic support 31 moves (falls),
Even when the branch portions 31A and 31B come into contact with each other to cause friction, it is possible to prevent the rubbing of these portions. The same effect can be obtained by a structure in which the surfaces of the branch portions 31A and 31B are covered with resin. In addition, it is needless to say that the configuration covered with the resin can be applied to the elastic support 11 described in the first embodiment.

Further, in the above-described embodiment, the case where the elastic support 11 or 31 is branched into two has been described. However, the present invention is not limited to this.
As long as the side fixed to the anchor is arranged so as to be overlapped in the vertical direction of the buckle main body, the side may be branched into a plurality of, for example, a fork shape or a comb shape.

[0047]

As described above, in the seat belt device according to the present invention, the side of the elastic support member for supporting the buckle body, which is fixed to the anchor, is branched into a plurality of parts, and a part of each branch part is formed. Since the buckle device is provided so as to overlap the vertical direction of the buckle body, the branched elastic supports do not interfere with each other when the elastic supports are tilted in the front-rear direction of the vehicle. Further, since the branch portions of the elastic support can be separated from each other in the width direction of the vehicle, the branched elastic supports do not interfere with each other when the elastic support is tilted in the width direction of the vehicle.
Therefore, without providing a function to rotate the entire elastic support around the anchor point, just by fixing the anchor to the floor or seat on the inner side of the vehicle at the anchor point, Good bendability can be obtained. As a result, it is possible to provide a seat belt device provided with a buckle device having improved reliability in terms of strength, with improved fit to an occupant without complicating the mechanism.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a use state of a seat belt device according to Embodiment 1 of the present invention.

FIG. 2 is a plan view showing a buckle device portion of the seat belt device according to Embodiment 1 of the present invention.

FIG. 3 is a side view of the buckle device shown in FIG. 2, which is a sectional view of a buckle body.

FIG. 4 is a plan view showing a buckle device portion of a seat belt device according to Embodiment 2 of the present invention.

5 is a side view of the buckle device shown in FIG. 4, which is a cross-sectional view of a buckle main body.

FIG. 6 is a plan view showing a buckle device portion of a seat belt device according to Embodiment 3 of the present invention.

7A is a side view of an anchor portion, FIG. 7B is an end view of the anchor portion, and FIG. 7C is a plan view of the anchor portion.

FIG. 8 is a diagram showing another embodiment according to the third embodiment of the present invention.

FIG. 9 is a diagram showing another embodiment according to the third embodiment of the present invention.

FIG. 10 is a diagram showing another embodiment according to the third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 webbing 5 tongue plate 9, 32, 35 anchor 10 buckle main body 11, 31 elastic support 22, 34, 36 anchor point

Claims (1)

[Claims] 1. A buckle body for locking a tongue plate in a detachable manner, one of which is fixed to the buckle body,
The other is a seat belt device having a buckle device, which is fixed to an anchor provided on the inner side of the vehicle and supports the buckle body, wherein the elastic support is provided on the anchor. A seat belt device in which a side to be fixed is branched into a plurality of parts, and a part of each branch part is arranged so as to overlap in a vertical direction of the buckle body.